Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) TAKAHASHI Shinji and KAWAMURA Masatoshi and SAKAMOTO Nobuyuki and KAWAMURA Takeharu and KATSURADA Junjiro and MACHIDA Takeshi and KOBAYASHI Naoyuki and KANNO Sotaro,Conservative Management for Perforated Duodenal Ulcer,Nihon Gekakei Rengo Gakkaishi (Journal of Japanese College of Surgeons),0385-7883,Japanese College of Surgeons,2006,31,6,920-924,https://cir.nii.ac.jp/crid/1390282679325109376,https://doi.org/10.4030/jjcs1979.31.6_920